On the Impact of Phase Shifting Designs on IRS-NOMA

被引:199
作者
Ding, Zhiguo [1 ,2 ]
Schober, Robert [3 ]
Poor, H. Vincent [1 ]
机构
[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
[2] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
[3] Friedrich Alexander Univ Erlangen Nurnberg, Inst Digital Commun, D-91054 Erlangen, Germany
基金
英国工程与自然科学研究理事会; 美国国家科学基金会;
关键词
Power system reliability; Probability; NOMA; Upper bound; Reliability; Complexity theory; Fading channels; Non-orthogonal multiple access (NOMA); intelligent reflecting surface (IRS); phase shifting designs;
D O I
10.1109/LWC.2020.2991116
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this letter, the impact of two phase shifting designs, namely coherent phase shifting and random discrete phase shifting, on the performance of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) is studied. Analytical and simulation results are provided to show that the two designs achieve different tradeoffs between reliability and complexity. To further improve the reception reliability of the random phase shifting design, a low-complexity phase selection scheme is also proposed in this letter.
引用
收藏
页码:1596 / 1600
页数:5
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